Clutch.



No. 885,335. PATENTED APR. 21, 1908.

G. N. FREY.

CLUTGH.

APPLICATION FILED JULY 23, 1901 3- 2 SHEBTS-SHEET 1.

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No. 885,335. PATENTED APR. 21, 1908.

G. N. FREY.

CLUTCH.

APPLICATION 11.31) wuss, 1906.

2 SHEETS-SHEET 2.

Mil/265569. [/2 9: aton- CLARENCE N. FREY, OF CINCINNATI, OHIO, ASSIGNORTO THE J. M. ROBINSON MANUFAC- TURING COMPANY, OF CINCINNATI, OHIO, ACORPORATION OF OHIO.

CLUTCH.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed July 23, 1906. Serial No. 327,333.

To all whom it may concern:

Be it known that I, CLARENCE N. FREY, a citizen of the United States,residing at Cincin'nati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Clutches, of whichthe following is a specification.

My invention relates to clutches and is especially applicable toemployment on heavy corrugating or bending machines, toggle presses, andthe like, where it is. desirable to obtain great power and perform asingle operation of the machine between clutch engagements, and theinvention will be readily understood from the following description andclaims, and from the drawings, in which latter:

Figure 1 is a side elevation of my improved device, showing its relationto a machine, the latter being broken away. Fig. 2 is a plan view of thesame. Fig. 3 is an end elevation of the same. Fig. 4 is a detail inhorizontal section on the line at of Fig. 1; and, Fig. 5 is aperspective view of the clutchsleeve.

1 represents the power member shown as a gear driven from a pinion 2.

3 is a driven shaft which is shown journaled in bearings 4 on the frame5 of the machine and in a bearing 6 on a bracket 7 on the machine.

8 is a sleeve. which slides longitudinally on the shaft but has rotativeconnection therewith by a spline 9. The power or driving member hasdriving teeth 10 forming a clutch face, and the sleeve has driven teeth11, also forming a clutch-face. The said clutchfaces are normally out ofcontact but arranged to be engaged for the purpose of transmitting thepower from the power member through the sleeve or driven member to thedriven shaft. For normally urging the sleeve into engagement with thepower member, I provide said sleeve or driven mem ber with an annulargroove 12 in which are located pins 14 at the ends of tines 15 of abell-crank fork 16 to the arm 17 of which a spiral spring 18 is secured,the other end of t e spring being secured to a lug 19 on the bracket 7.The spring normally forces the sleeve toward the power member fornormally causing engagement between the teeth of the sleeve and theteeth of the power member, that is, normally engaging the clutchmembers. I provide the sleeve with a pair of annular grooves 21 22. Aroll 27 is journaled on a pin 27 at the end of a bolt 28 and takes intothe groove 2]., and a roll 29 journaled on a pin 29 on the end of a bolt30 and takes into the groove 22, the said rolls forming part of saidbolts, the respective bolts having sliding engagement in bearings 31 32respectively on supplemental brackets 33 34 on the bracket 7. Thesebolts are located at the respective sides of the sleeve 8 for equalizingthe pressure upon said sleeve and preventing tilting or binding actionof the sleeve upon its shaft when the sleeve is moved longitudinally ofthe shaft. For normally pressing said bolts 28 30 toward the sleeve, Ipivot their respective ends at 35 36 (see Figs. 3 and 4) to bell-cranklevers 37 38 pivoted respectively at 39 40 to lugs 11 1-2 of therespective brackets 33 31. The tines 43 44 of a bifurcated bar 15 arepivoted respectively at 46 47 to said respective levers 37 38. 18 is arock-shaft to which a treadle 49 or other suitable operating device isadapted to be secured.

An arm 50 extends from the rock-shaft and has pivotal connections with alink 51 which is pivoted to a lever 52, which latter is pivoted on abolt 53 to the frame of the machine and has pivotal connection with thebifurcated bar 45 by means of a pin 54 taking through an aperture in theend of said lever and selectively taking into a series of apertures 55in the lower end of said bifurcated bar. A spring 56 is secured to theouter end of the lever 52 and to the bracket 7 for norin ally raisingsaid bifurcated bar and pressing the bolts 28 30 toward the sleeve 8.The sleeve is provided with shoes 57 which may be adjustably securedabout the periphery of the sleeve by means of screws 58 selectivelythreaded into threaded apertures 59 in the sleeve. These shoes haveinclined engaging faces 60 which are adapted to make engagement with therolls 27 29 of the bolts 28 30 for forcing the sleeve outwardly awayfrom the power member.

In operation,.if it is desired to bring the clutch members intoengagement for operating the machine, the treadle is depressed, whichforces the bolts 28 30 outwardly beyond the peripheries of the shoes 57.The spring 18 immediately causes longitudinal movement of the sleeve 8toward the power member and causes engagement of the clutch members fordriving the sleeve and rotating the shaft 3 with the sleeve 8 and thepower member. As soon as the treadle is released, the spring 56 willcause retraction of the bolts 28 30, the inner ends of said bolts againtaking into said respective grooves 21 22. As soon as, in the rotationof the sleeve, the inclined faces 60 reach the rolls 27 29 on the bolts28 30 they will ride said rolls and consequently draw the sleevelongitudinally away from the power member and thereby release engagementbetween the clutch members, when the machine is instantly brought torest. The shoes are adjustable about the periphery of the machine inorder that the operation of the machine may be initiated at differentpoints about the periphery of the driven member.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent is:

1. In a clutch, the combination of a driving member and a driven memberhaving clutch-faces therebetween, means for moving one of said membersaxially, said last-named member having a plurality of annular grooves, abolt taking into each of said grooves, a shoe in each of said grooves,the bolt and shoe in each of said grooves having an inclined engagingface between them, and means for retracting said bolts, said bolts beingequidistantly arranged about the periphery of said last-named member andsimultaneously and collectively acting on said shoes, substantially asdescribed.

2. In a clutch, the combination of a driven shaft, a driving memberrotatable about said shaft, a sleeve rotatably secured to andlongitudinally movable with relation to said shaft, said driving memberand sleeve having engaging clutch-faces and said sleeve having aplurality of annular grooves, a moving member for normally causingengagement of said clutch-faces taking into one of said grooves, aplurality of bolts taking into others of said grooves and arrangedequidistantly about the rotary axis thereof, shoes having inclinedengaging faces secured equidistantly about the rotary axis of saidsleeve in said other grooves making engagement with the sides of saidbolts simultaneously from a plurality of equidistantly arranged points,and means for moving said bolts longitudinally out of range of saidshoes for causing engagement of said clutch-faces, sub stantially asdescribed.

3. In a clutch, the combination with a driven shaft, a power memberrotating about said shaft, a sleeve rotatively secured to andlongitudinally slidable with relation to said shaft, said sleeve andpower-member having engaging clutch-faces, said sleeve having threeannular grooves, a moving member for moving said sleeve endwise takinginto one of said grooves, an endwise movable bolt taking into each ofthe others of said grooves, said bolts arranged equidistantly about therotary axis of said sleeve, a shoe in each of said last-named grooves,said shoes arranged equi distantly about the rotary axis of said sleeve,the shoe and bolt in each of said grooves having an inclined engagingface between them, and constructed for moving said sleeve longitudinallysimultaneously from a plurality of points about its rotary axis, meansfor nor mally holding said bolts in said grooves, and means forretracting said bolts simultaneously, substantially as described.

4. In a clutch, the combination of a driven shaft, a driving memberrotatable about said shaft, a sleeve rotatably secured to andlongitudinally movable with relation to said shaft, said driving memberand sleeve having engaging clutch-faces, and said sleeve having aplurality of annular grooves, shoes in said grooves, means for securingsaid shoes in said grooves at different positions about the periphery ofsaid sleeve, bolts taking into said grooves, said bolts and shoesarranged equidistantly about the rotary axis of said sleeve andrespectively having an engaging inclined. face between them, means fornormally pressing said sleeve toward said driving member, means fornormally forcing said bolts simultaneously into said grooves, forsimultaneously moving said sleeve longitudinally from a plurality ofpoints equidistantly located about its rotary axis and means forretracting said bolts, substantially as described.

In testimony whereof, I have signed my name hereto in the presence oftwo subscribing witnesses.

CLARENCE N. FREY. Witnesses HENRY N. BAUER, CoRDELrA OHEARN.

